Peters



5 Sheets-Sheet 1. J. P. GOLDING & G. B. DURKEE.

MACHINE FOR MAKING SLASHED METALLIC SCREENING.

Patented June. 16, 1886.

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MACHINE FOR MAKING SLASHED METALLIC SOREBNING. No. 320,241. PatentedJune 1.6, 1885.

N. PETERS. Hmo-Umu n hur, Walmngmm D c (No ModeL) 5 SheetsSheet 4. J. P.GOLDING & G. B. DURKEE.

MACHINE FOR MAKING SLASHED METALLIC SCREENING.

No. 320,241. Patented June 16, 1885.

izr J/Za'm gy- (N0 ModeL) 5 SheetsSheet 5. J. P. GOLDING & G. B. DURKEE.

MACHINE FOR MAKING SLASHED METALLIC SCREENING.

NiTED STATES ATENT FFICEQ JOHN F. GOLDING AND GEORGE E. DURKEE, OFCHICAGO, ILLINOIS, ASSIGNORS TO THE EXPANDED METAL COMPANY.

MACHINE FOR MAKING SLASHED METALLIC SCREENING.

QEPECIFICATION forming part of Letters Patent No. 320,241, dated June16, 1885.

Application filed August 28, 1884.

To all whom it may concern.-

Be it known that we, JOHN F. GOLDING and GEORGE E. DURKEE, citizens ofthe United States, residing in Chicago, in the State of Illinois, haveinvented certain new and useful Improvements in Machines forSimultaneously Cutting and Expanding Slashed Metallic Screening, ofwhich the following is the specification.

Figure 1 is a front view or elevation. Fig. 2 is a plan view. Fig. 3 isan end view opposite to end where power is applied. Fig 4 is a verticalsectional view through line 4 4, Fig. 1. Fig. 5 is detail of cuttersinposition to receive the metal for cutting and expandin Fig. 6 is detailof knives in position after having cut and expanded the metal. Fig. 7 isa top view of lower bar, showing )osit-ion of lower series of cuttersand the guides which cause the bar holding the lower cutters to moveslightly obliquely to itself, but parallel with each lower cutter. Fig.8 is a side view of one end of lower bar, showing cam forgiving said barlongitudinal movement, and plunger which holds the dog that actuates thecam. Fig. 9is an end view of end of lower bar shown in Fig. 8. Fig. 10is a detail of cam movement to return lower bar to first position, ashereinafter will be explained. Fig. 11 is detail of ratchet andspring-catch for feeding sheet metal to cutters. Fig. 12 is a view ofmetal partially cut and formed and partially uncut.

The nature and object of thisinvention is to provide a machine forcutting and expanding slashed metallic screening, which was the subjectof Patent No. 297,882, issued to John F. Golding, one of the applicantshereof.

A and B are the posts of the frame of the machine.

0 is the front crossbeam, supported by the posts A and B.

D is the main shaft of machine, located at top and working in suitablebearings in the posts A and B. On this shaft are the eccentrics E E andeccentric F, the last being located near the center of shaft D.

G is the d riving-shaft,suitably boxed in both end posts AB, andcarrying drive-wheel H and spur-wheel I.

To the shaft E is attached a large cog-wheel, J, driven by spur-wheel I.

(No model.)

K is the upper bar, holding the upper series of cutters and actuated ina vertical plane by eccentrics E E and links L L.

M is a brace extending from one post to the other to strengthen themachine.

N is thelower bar, holding the lower cutters.

.This bar is provided with inclined offsets y y,

and is movable between guides y y, one of which is .on front side of barC, and the other is on back of bar Z. Bar Z is a cap extending alongface of bar C, and provided with guides corresponding with the guides onfront of bar N. The object of these guides is to give the bar N a slightoblique movement to cause the cutters attached to it to move paralell tothe cutters on upper bar, K.

O is an eccentric on end of shaft D, and by pitman P connected toplungerQwhich works through guides R R.

()u plunger Q, Fig. 10, is fastened the box S, in which works the dog T.This dog works against the cam U, which is attached to the lower bar, N,on its side near its end. [his cam is cut beveled on the under side atV,and on the upper side it is formed with a scalloped bevel at \V.

X is a spring fastened at its lowerend to the plunger Q, the upper endresting against the outer end of dog T. This spring presses the dogagainst the cam U.

To the lower bar, N, is attached a series of cutters, d, by means ofscrews 1), Figs. 5 and 6, where they are shown in detail. In each cutteris the slot 0, through which the screw 1) works to admit of their beingadjusted when worn. The form of these cutters is shown in the first one(I of the series. The front edge is cut beveling, as shown at a. Thesecutters are placed one overlapping the other, as shown at (Z d, Fig. 7,and also in Figs. 1 and 2.

To the upper bar, K, Fig. 1, are fastened a series of cutters, g 9,attached to this bar in a similar manner, each one overlapping the otherin the same manner, and the rear lower part of each upper knife is cutbeveling, as shown at ff, Figs. 1 and 5.

h It It, Fig. 2, is a frame attached to theposts A B, and extendingbackward in brace form, which is more clearly shown in Figs. 3 and 4.

t i, Figs. 2, 3, and 4, are two ratchet-bars, supported at their rearends by the frame h, and secured to a bar, I), at their front ends.

ICO

U are in the positions shown in Fig. 6.

The bar 1) reaches from post A to B over the bed 0 of the machine, justback of the cutters, and is supported at its center by braces d d,reaching from posts A B.

7', Fig. 2, is cross-bar extending from ratchetbar i to i, and slidingbeneath them. At each end of cross-bar is a spring, t, Fig. 11, one endbeing fastened to the cross-bar j and the other working against ratchet2', so placed that it allows the crossbar j to freely move forwardtoward the cutters, but prevents it moving backward. By turning the camt, located above the spring 25, the free end of this spring isdepressed, which allows the crossbar j to be moved backward.

7c, Figs. 2 and 4, is an angle-bar extending lengthwise of shaft G, andattached thereto by two or more collars extending around said shaft Gfreely working thereon, and connected to the main shaft D by the pitmanZ, working on eccentric F.

To collar 70, Figs. 2 and 4, is attached dog on, and extending downward,the lower end working between heads ac. These heads are fastened to theratchet-bars i i, and there are two of these dogs m.

d is a brace extending from posts A B to vcenterand top of front ofcross-bar O,-to steady and support the machine. I

The operation of our machine is as follows: Motion is communicated tothe main drivingwheel H by belt orotherwise. .As the eccentries on E Erevolve, the bar K is raised and lowered, which works the-cutters g gfastened over the cutters d d in lower bar, N. The position of thecutters before making their cutting movement is shown in Fig. 5-that is,they are separated, leaving a space between them. As the upper cuttersdescend in a vertical plane, the bevel edge of the-upper entters movealong the surface of the bevel edge of the lower cutters, and the lowerbar, N, to which the lower cutters are attached, being allowed to freelymove longitudinally in itsbearings, the descent of the upper; cutterscauses the lower cutters to move horizontally, and when the uppercutters have finished their downward movement the two sets of cuttersThe downward and upward movement of upper cutters is caused by theeccentrics on shaft D. The return movement of lower shaft, N, with itscutters is accomplished as follows: As the downward movement of thecutters is made the plunger Q also descends, and at the same time thedog T, Fig. 10, takes its position on the lower bevel of cam U, and asthe plunger rises the bar N is returned to its original position. Asheet of metal of the proper size is placed in position on bed 0, withthe rear edge resting against bar 3', as shown at s, Fig. 4. Theeccentric F on shaft D causes the collar k to rock, which in turn causesthe lower end of dog at to vibrate. This causes the ratchetsi i to movebackward and forward, which in turn causes the cross-bar j to moveforward the lower edges of the upper cutters. jtire piece of metal isconsumed, and no part 3 or portion is lost or wasted.

of each cutter.

at one corner of the metal is that each cut,

and feed the metal to the cutters, and as the metal passes between thetwo sets of knives it comes out in strands cut and bent, (leaving uncutintervals,) which form and maintain a mesh, as more plainly shown inFig. 12. In

Fig. 1 it is shown in the act of issuing from between the knives.

It will be observed that there are intervals where the material isuncut, and that these uncut intervals form the union of the, meshes.This uncut interval is formed as follows: The lower bar, N, is moved acertain distance.

This distance is such that the upper corner of 'the beveled edge of thelower cutters is a little beyond the lower corner of the bevelededgedcorner on upper cutters, and this distance between these two cornersdetermines the uncut interval in the metal. The feeding movement is soadjusted that the metal is fed at each movement just far enough to formthe strand, and'as the upper cutters descend they l push ahead of themthat part of the metal, and at the same instant cut it from the mainpart i of the metal, and this cut strand lies between the beveled edgesof the two cutters and against The en- 1t will be observed that themetal is fed at an angle with the line of the cutters and par- ;allelwith the face of each cutter, and that the bar j ,-which forces themetal between the cut- *ters,is set at an angle with the line of thecutters and parallel with the face of each cutter.

thereto up and down in vertical planes and 3 The reason why we feed themetal at an }angle with the main cutting-bars of the machine is, first,that the. said bars may be in line with the main shaft, and, second,that the .metal may encounter the cutters first 011 one corner and in aline parallel with the surface The object in beginning to cut strand, orloop will be set free by a cut immediately back of it, said out or cutsalways supplying as much length of strand as the preceding knivesconsume, as the pressing the strands downward and forming the meshcauses the cut and spread part of the metal to assume a form shorterthan the uncut part.

The improvement in the art of making screening from metallic plates orsheets incidental to the operation of this machine is claimed in ourvapplication for a United States Patent filed August 28, 1884, Serial No.142,328.

Ve claim 1. In a machine for cutting slashed metallic screening, thecombination of the upper bar, K, provided with the cutters g g andhaving avertical movement, with the lower bar, N,

provided with cutters a a and having a longitudinal movement, as and forthe purpose Shown.

2. In a machine for cutting slashed metallic screening, the bar K,provided with cutters cutting over bar N, provided with similar knives,the first working vertically while the second is working horizontally,to provide the necessary cuttingsurface and space for the out viderlwith cutters set at a slight angle with loops to expand.

3. In a machine for cutting slashed metallic screening, the cutters ineach cutter-bar arranged one overlapping the other for the purpose ofsimultaneously cutting a number of slashes and forming loops, leavinguncut sec tions between them for the purpose of forming a continuousmesh from one piece of metal without cutting away or wasting any of thematerial, as and for the purpose shown.

4. The combination of the cutter-bar prothe surfaceof the bar withguides whose faces are parallel with the faces of the cutters, causingthe cutters to travel in a line with their own faces and the bar to haveaslightoblique movement, substantially as shown.

JOHN F. GOLDING. GEORGE B. DURKEE.

Witnesses:

JAS. A. (JowLEs, J. P. MOELROY.

